Pith Number

pith:436CGWFC

pith:2019:436CGWFCL5TJ652SLGXLGVHRLF

not attested not anchored not stored refs pending

How support lines touch an arc

Wacharin Wichiramala

arxiv:1907.10215 v1 · 2019-07-24 · math.MG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{436CGWFCL5TJ652SLGXLGVHRLF}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:39:38.611480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6fc2358a25f669f775259aeb354f1597cbc00d33e9f5e08146cc689f57963ed

Aliases

arxiv: 1907.10215 · arxiv_version: 1907.10215v1 · doi: 10.48550/arxiv.1907.10215 · pith_short_12: 436CGWFCL5TJ · pith_short_16: 436CGWFCL5TJ652S · pith_short_8: 436CGWFC

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/436CGWFCL5TJ652SLGXLGVHRLF \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e6fc2358a25f669f775259aeb354f1597cbc00d33e9f5e08146cc689f57963ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a371d891fe3594fcc9e4816472b0eba118f2900081f88f22052bcf68759f641b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2019-07-24T02:55:55Z",
    "title_canon_sha256": "946e979f13df679f57dee525a4097db9ef7822d6d04e48d03a6e6b37ebd8fd87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.10215",
    "kind": "arxiv",
    "version": 1
  }
}